:root{color-scheme:light;--bg:#f4f4f2;--card:#ffffff;--text:#111111;--muted:#696969;--line:#deded9;--error-bg:#fff1f0;--error-line:#e8b8b3}*{box-sizing:border-box}body,html{min-height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;text-rendering:optimizeLegibility}button,input{font:inherit}a{color:inherit;text-decoration:none}.auth-page{min-height:100dvh;display:flex;flex-direction:column;justify-content:flex-end;padding:0;background:var(--bg)}.auth-card{width:100%;border:0;border-radius:28px 28px 0 0;background:var(--card);padding:28px 24px max(24px,env(safe-area-inset-bottom));box-shadow:0 -8px 40px -12px rgba(0,0,0,.18);text-align:center}.brand-mark{margin:0 auto;width:40px;height:40px;display:grid;place-items:center;border-radius:14px;background:#111;color:#fff;font:700 24px/1 Georgia,serif}.eyebrow{display:none}h1{margin:0;font-size:22px;font-weight:600;line-height:1.2;letter-spacing:-.01em}.lead{margin:8px auto 0;max-width:320px;color:var(--muted);font-size:14px;line-height:1.45}.auth-actions{display:grid;grid-gap:12px;gap:12px;margin-top:28px}.provider-button{width:100%;min-height:56px;display:flex;align-items:center;gap:12px;border:0;border-radius:16px;background:#f1f1ef;color:#111;padding:0 16px;font-size:15px;font-weight:600;text-align:left;cursor:pointer;transition:filter .15s ease,opacity .15s ease}.provider-button:hover{filter:brightness(.97)}.provider-button:disabled{cursor:not-allowed;opacity:.55}.provider-button.primary{background:#f1f1ef;color:#111}.google-g{font-family:Arial,sans-serif;font-size:18px;font-weight:800}.progress-block{display:grid;place-items:center;grid-gap:14px;gap:14px;margin-top:34px;color:var(--muted)}.progress-block p{margin:0;font-size:14px}.spinner{width:34px;height:34px;border:2px solid #dadad6;border-top-color:#111;border-radius:50%;animation:spin .8s linear infinite}.error-box{margin-top:24px;border:1px solid var(--error-line);border-radius:14px;background:var(--error-bg);padding:14px 16px;color:#7c2520;font-size:14px;line-height:1.5}.error-box+.provider-button{margin-top:22px}.privacy-copy{margin:24px 0 0;color:var(--muted);font-size:11px;line-height:1.45}.invitation-card .brand-mark{margin-bottom:20px}.invitation-summary{display:grid;grid-gap:6px;gap:6px;margin-top:24px;padding:18px;border:1px solid var(--line);border-radius:18px;background:#f7f7f5;text-align:left}.invitation-summary strong{font-size:16px;line-height:1.35}.invitation-summary p{margin:0;color:var(--muted);font-size:12px;line-height:1.5}.invitation-organization{color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.invitation-details{margin:14px 0 0;overflow:hidden;border:1px solid var(--line);border-radius:18px;text-align:left}.invitation-details div{display:grid;grid-template-columns:96px 1fr;grid-gap:12px;gap:12px;min-height:54px;align-items:center;padding:10px 14px;border-top:1px solid var(--line)}.invitation-details div:first-child{border-top:0}.invitation-details dt{color:var(--muted);font-size:11px}.invitation-details dd{margin:0;font-size:12px;font-weight:600;overflow-wrap:anywhere}.invitation-primary{width:100%;min-height:56px;margin-top:22px;border:0;border-radius:16px;background:#111;color:#fff;padding:0 18px;font-size:14px;font-weight:700;cursor:pointer;transition:opacity .15s ease,transform .15s ease}.invitation-primary:hover{opacity:.92}.invitation-primary:active{transform:scale(.99)}.invitation-primary:disabled{cursor:not-allowed;opacity:.5}@keyframes spin{to{transform:rotate(1turn)}}@media (min-width:520px){.auth-page{justify-content:center;align-items:center;padding:24px}.auth-card{width:min(100%,420px);border-radius:28px;padding:36px 32px;box-shadow:0 24px 60px -20px rgba(0,0,0,.25)}}@media (prefers-color-scheme:dark){:root{color-scheme:dark;--bg:#111214;--card:#1a1b1d;--text:#f6f6f4;--muted:#a2a2a0;--line:#323335;--error-bg:#2a1716;--error-line:#6d312d}.brand-mark{background:#fff;color:#111}.invitation-summary,.provider-button{background:#242527;color:#f6f6f4}.invitation-primary{background:#f6f6f4;color:#111}.spinner{border-color:#f6f6f4 #3b3c3e #3b3c3e}}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.01ms!important;transition-duration:.01ms!important}}